Abstract
IN a search for the cause of the visual effects experienced under the influence of Mescal Button, observations were made on entoptic phenomena associated with the retina, and from these it would seem that the human eye can function in a ‘verted’ as well as in an ‘inverted’ state: in other words, the sensitive part of the retina can see both ways,
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MARSHALL, C. Looking Backwards—an Entoptic Experiment. Nature 132, 785–786 (1933). https://doi.org/10.1038/132785b0
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DOI: https://doi.org/10.1038/132785b0
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